Bently Nevada 3500/40M Proximitor Monitor

The Bently Nevada 3500/40M Proximitor Monitor delivers precise vibration and position measurements across four independent channels. The 3500 series design helps engineers track shaft behavior, protect rotating assets, and analyze critical operating trends within high-demand industrial environments.

Functional Overview

Technicians configure each 3500/40M channel through 3500 Rack Configuration Software, and they quickly assign radial vibration, thrust position, eccentricity, REBAM, or differential-expansion measurement functions. Each channel processes its proximity-probe input and generates static values that support accurate alarm setpoints and fast protection responses.

Performance Characteristics

The 3500/40M monitor uses dedicated circuitry to condition probe signals and compare them with programmed alarm limits. Operators therefore receive clear alerts when monitored parameters drift outside acceptable ranges, which strengthens both machine protection and maintenance diagnostics.

Technical Specifications

Electrical & Channel Data

Parameter	Specification
Channels	4 proximity-probe input channels
Input Type	1–4 proximity transducer signals
Power Consumption	7.7 W typical
Input Impedance	10 kΩ (standard I/O, Proximitor and acceleration inputs)
Static Values	Configurable for multiple vibration and position parameters

Environmental Limits

Condition	Specification
Operating Temp (Internal / External Termination I/O)	–30 °C to +65 °C (–22 °F to +150 °F)
Operating Temp (Internal Barrier I/O)	0 °C to +65 °C (32 °F to +150 °F)
Storage Temperature	–40 °C to +85 °C (–40 °F to +185 °F)
Humidity	95% non-condensing

Dimensions & Weight

Item	Specification
Module Dimensions	4.0 m (13.1 ft)
Weight	Approx. 0.45–0.55 kg depending on I/O module configuration

Origin

Item	Specification
Country of Manufacture	United States (Bently Nevada)

Measurement Functions

The 3500/40M supports a range of measurement modes that allow engineers to analyze shaft dynamics with high accuracy:

Radial vibration
Thrust position
Eccentricity
REBAM
Differential expansion

Application Value

Engineers deploy the 3500/40M monitor in turbines, compressors, and other mission-critical rotating machines, since the module delivers reliable proximity-probe conditioning along with clear alarm logic that enhances asset protection.